C++ :

#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;
const int N = 10010;
char ch[N];
bool f = 1;
int main()
{
    string s;
    while (cin >> s){
        if(f) f = 0;
        else cout << ",";
        cout << s.size();
    }

    return 0;
}